The term 'Baboon West African' is composed of three crossword solutions: MANDRILL (8 letters), DRILL (5 letters), and Chacma (6 letters). Mandrills are a species of Old World monkey found in tropical rainforests of equatorial Africa. They are the world's largest species of monkey, with males weighing up to 35 kg. Drills are another species of Old World monkey, found in the forests of West and Central Africa. They are smaller than mandrills, with males weighing up to 13 kg. Chacmas are a species of baboon found in Southern Africa. They are the largest of the baboons, with males weighing up to 40 kg.